// JavaScript Document

function externalLinks() {
    if (!document.getElementsByTagName) return;
    var anchors = document.getElementsByTagName("a");
    for (var i=0; i<anchors.length; i++) {
        var anchor = anchors[i];
        if (anchor.getAttribute("href") &&
            anchor.getAttribute("rel") == "external")
            anchor.target = "_blank";
    }
}
window.onload = externalLinks;

function showsubmenu(id){
    submenu = document.getElementById('s'+id);
    for(i=1;i<=5;i++){
        if(i==id){
            submenu.style.display="block";
        } else {
            document.getElementById('s'+i).style.display="none";
        }
    }
}